P585 Development of Mercury Adaptation in an Aquatic Oligochaete Worm . Vidal, Doris*,1, 1 Southern California Coastal Water Research Project, Westminster, California, USA

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P586 Sequence comparisons of the CYP1A promoter of AHR ligand-resistant and -responsive killifish (Fundulus heteroclitus) populations. Arzuaga, Xabier*,1, Elskus, Adria, 1 University of Kentucky, Lexington, KY, USA

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P587 Antioxidant defenses in killifish (Fundulus heteroclitus) exposed to Superfund sediments: short-term and evolutionary responses. Meyer, Joel*,1, Smith, James1, Di Giulio, Richard1, 1 Duke University, Durham, NC, USA

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P588 Are mummichogs, Fundulus heteroclitus, thriving in harsh chemical environments immunologically privileged, or are they immunocompromised? Rice, Charles*,1, Frederick, Lee1, van Veld, Peter2, 1 Clemson University, Clemson, SC, USA2 Virginia Institute of Marine Science, College of William & Mary, Gloucester Pt, VA

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P589 Characterization of ARNT and AHRR in Atlantic Tomcod. Roy, Nirmal*,1, Wirgin, Isaac1, 1 NYU School of Medicine, Tuxedo, NY, US

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P590 Hormetic and Stage Specific Toxicity Induced by Low Levels of Cadmium in the Black Blowfly (Phormia regina). Nascarella, Marc*,1, Calabrese, Edward1, 1 University of Massachusetts Amherst, Environmental Health Sciences Dept, Morrill Science center I, N344, Amherst, MA

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